Improvement in rocking-chairs



O. 8.13. 8n J G. SPOERL. Rocking-Chair.

No. 202,291. Patented April 9, 1878.

UNITED STATES PATENT OFFICE.

CHRISTIAN S. E. SPOERL AND JOHN SPOERL, OF BROOKLYN, NEW YORK.

- IMPROVEMENT IN ROCKING-CHAIRS.

Specification forming part of Letters Patent N0. 202,291, dated April 9,1878; application filed February 20, 1878.

To all whom it may concern:

Be it known that we, CHRISTIAN S. E. SPoERL and JOHN GEURGE SPoERL, bothof Brooklyn, in the county of Kings and State of New York, have inventeda new and useful Improvement in Rocking-Chairs, which improvement isfully set forth in the following specification, reference being had tothe accompanying drawings, in which Figure 1 represents a verticalcentral section of a chair embracing our invention. Fig. 2 is a planortop view thereof, partly in section.

Similar letters indicate corresponding parts.

Our invention relates to that class of chairs in which the rocking framerests on a base or supporting-frame.

It consists in the combination, with the rocking frame and thebase-frame, of one or more elliptical or C springs, which are fastened,at or near their middle portions, to the base-frame, and provided withoutwardly-projecting arms, the outer ends of which are secured to therocking frame, whereby an eX- tremely elastic connection of the rockingframe and base-frame is produced, and one which can be supplied at lowcost.

In the drawings, the letter A designates the base-frame, B is therocking frame, and O are the springs, of our chair.

Of the springs O we have in the example shown used two but, if desired,a greater or less number may be used.

The base-frame A is constructed of two side rails, a, and traverses b,while the rocking frame is composed of rockers c and traverses d, therockers forming part of the seat-frame.

The springs G are composed of flat metallic strips, which are bent tothe form of an ellipse, but are left divided, as at c, Fig. 1, thusgiving them the general shape of the letter C. We fasten these springsG, at or near their middle portions, to the central traverse b of thebase-frame, and at their ends to the traverses d of the rocking frame,rivets or other suitable devices being used for this purpose.

We provide the springs O with arms 0, which project therefrom inopposite directions, and which may be formed in one piece therewith, orformed separately and fastened thereto by rivets or other suitablemeans. These arms 0 are intended to increase the elasticity of thesprings O, and constitute the end parts thereof, or the means forfastening the same to the rocking frame B.

hat we claim as new, and desire to secure by Letters Patent, is-

The combination, in a rocking-chair, of a base-frame, a rocking frameresting on said base-frame, and one or more elliptical or C- shapedsprings, O, secured at their middle portions to the base, and providedwith outwardly-projecting arms 0 O, the outer ends of which are securedto the rocking frame, substantially as and for the purpose set forth.

In testimony that we claim the foregoing we have hereunto set our handsand seals this 19th day of February, 1878.

CHRISTIAN S. E. SPOERL. IL. s.] JOHN GEORGE SPOERL. [L. s.] Witnesses:

W. HAUFF,

CHAS. WAHLERs.

